High-pressure discharge lamp for operation with longitudinal acoustic modulation
US8334652B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2009 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | May 28, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-pressure discharge lamp may include an elongate ceramic discharge vessel, at the ends of which an electrode system with an electrode tip pointing towards the discharge is mounted in a seal, the seal being tubular, the discharge vessel having an aspect ratio of at least 1.5, the discharge vessel having a metal halide fill and a wall load of more than 25 W/cm2, wherein the lamp is configured for operation with longitudinal acoustic modulation, the specific rated power of the entire outer surface area of the discharge vessel lying between 17 and 22 W/cm2, while at the same time the wall load in a subregion of the surface area, which extends between the tips of the electrodes, lies in the range of between 28 and 40 W/cm2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.